A new red phosphor BaGeF6:Mn4+: hydrothermal synthesis, photo-luminescence properties, and its application in warm white LED devices
A new red phosphor BaGeF6:Mn4+: hydrothermal synthesis, photo-luminescence properties, and its application in warm white LED devices
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DOI：
10.1039/c4tc02956a
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发表时间：
2015-03
影响因子：
6.4
通讯作者：
Qiang Zhou;Yayun Zhou;Y. Liu;Lijun Luo;Zhengliang Wang;Jinhui Peng;Jing Yan;Mingmei Wu
中科院分区：
文献类型：
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作者：
Qiang Zhou;Yayun Zhou;Y. Liu;Lijun Luo;Zhengliang Wang;Jinhui Peng;Jing Yan;Mingmei Wu
在这项工作中，我们报道了一种新型高效的红色荧光粉BaGeF6：Mn4+(记为BGFM)，它是通过在优化的KMnO4浓度下在HF溶液中腐蚀BaCO3和GeO2来实现的。用粉末X射线衍射仪(XRD)、扫描电子显微镜(SEM)和能谱仪(EDS)对其晶体结构和形貌进行了详细的表征。研究了合成条件对其光致发光性能的影响。它在蓝色和红色范围内分别表现出广泛的吸附和强烈的发射。用蓝色GaN芯片与YAG：Ce-BGFM混合物混合制成的白光LED器件比只用一个YAG：Ce组分混合的白光更温暖。
In this work, we report a new and efficient red phosphor BaGeF6:Mn4+ (denoted as BGFM) by hydrothermally etching BaCO3 and GeO2 in HF solution with an optimized KMnO4 concentration. The crystal structure and morphology were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) in detail. The influence of synthesis conditions on its photo-luminescent (PL) properties has been investigated comprehensively. It can present broad adsorption and sharp emissions in blue and red ranges respectively. The white LED device made of a blue GaN chip merged with a YAG:Ce–BGFM mixture presents warmer white light than that merged with only one YAG:Ce component.